msft market cap in 2011

On December 30, 2011, Microsoft (MSFT) had a market capitalization of $172.3B, based on 8.47B shares at a price of $20.35.

DATE CLOSE VOLUME OUTSTANDING MARKET CAP
December 30 2011
$20.35
27,395,700
8,465,000,000
$172,255,978,000.00
December 29 2011
$20.40
22,616,900
8,465,000,000
$172,653,833,000.00
December 28 2011
$20.24
29,822,500
8,465,000,000
$171,326,521,000.00
December 27 2011
$20.41
21,287,200
8,465,000,000
$172,786,733,500.00
December 23 2011
$20.40
23,205,800
8,465,000,000
$172,720,706,500.00
December 22 2011
$20.23
35,794,100
8,465,000,000
$171,260,494,000.00
December 21 2011
$20.19
64,132,500
8,465,000,000
$170,928,666,000.00
December 20 2011
$20.40
60,767,600
8,465,000,000
$172,720,706,500.00
December 19 2011
$20.01
52,258,300
8,465,000,000
$169,402,426,500.00
December 16 2011
$20.38
101,408,100
8,465,000,000
$172,520,932,500.00
December 15 2011
$20.04
46,213,900
8,465,000,000
$169,601,354,000.00
December 14 2011
$20.06
47,926,400
8,465,000,000
$169,801,128,000.00
December 13 2011
$20.19
54,581,100
8,465,000,000
$170,928,666,000.00
December 12 2011
$20.00
38,945,900
8,465,000,000
$169,269,526,000.00
December 09 2011
$20.15
53,788,500
8,465,000,000
$170,530,811,000.00
December 08 2011
$19.91
60,522,200
8,465,000,000
$168,539,843,000.00
December 07 2011
$20.07
62,667,000
8,465,000,000
$169,867,155,000.00
December 06 2011
$20.11
46,175,300
8,465,000,000
$170,265,010,000.00
December 05 2011
$20.15
56,818,400
8,465,000,000
$170,530,811,000.00
December 02 2011
$19.77
52,293,800
8,465,000,000
$167,345,431,500.00
December 01 2011
$19.82
48,545,400
8,465,000,000
$167,744,133,000.00
November 30 2011
$20.05
81,350,900
8,465,000,000
$169,734,254,500.00
November 29 2011
$19.47
40,917,100
8,465,000,000
$164,824,554,500.00
November 28 2011
$19.49
46,766,700
8,465,000,000
$165,023,482,000.00
November 25 2011
$19.05
26,164,600
8,465,000,000
$161,241,320,000.00